CONVECTION TRANSFER SYSTEM

摘要

A system provides convective transfer from a workpiece (10) to a flowing fluid. A gap (16) is formed between the workpiece (10) and a facesheet (12) containing fluid supply nozzles (18) and fluid return nozzles (20). The fluid is fed to the supply nozzles (18), travels a short distance within the gap (16) adjacent to the facesheet (12), and exits via return nozzles (20). The flow cross section and flow density facilitate heat transfer at a moderate flow rate and low fluid pressure. The system is also applicable for chemical transfer such as plating or etching printed circuit boards and for transfer through a semi-permeable membrane.